Power-on reset circuit, module including same, and...

Details Power-on reset circuit, module including same, and... Power-on reset circuit, module including same, and...

2011-08-02

2011-08-02

Lam, Tuan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S143000

Reexamination Certificate

active

07990190

ABSTRACT:
A power-on reset circuit includes a charge-up circuit to charge a first capacitor after power is on, a first NOR circuit connected to an output terminal of the charge-up circuit and receive a power-on reset signal output from an output terminal of the power-on reset circuit, a first inverter connected to the first NOR circuit, a second capacitor connected between an input terminal of the first NOR circuit and an output terminal of the first inverter, a counter configured to count a clock, a clock selector configured to select whether to output or inhibit a clock signal based on an output signal from the counter, and a second inverter connected to the output terminal of the counter to output the power-on reset signal.

REFERENCES:
patent: 4900950 (1990-02-01), Dubujet
patent: 5894240 (1999-04-01), Shieh et al.
patent: 7518419 (2009-04-01), Pasqualini
patent: 2008/0036510 (2008-02-01), Kim
patent: 2009/0195273 (2009-08-01), Lee
patent: 2009/0206890 (2009-08-01), Park
patent: 4424877 (2009-12-01), None

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